Calchy.

How Long to Pay Off $4,000 at 25% APR with $400/Month

Paying $400.00/month on a $4,000 balance at 25% APR takes 1 yr and costs $800.00 in interest.

Payoff summary
Months to pay off
12
1 yr
Total interest
$800
Total paid
$4,800
1st month interest
$83.33

Computed using the standard amortization formula (monthly compounding at APR/12). Assumes fixed payment with no new charges — real card statements may vary based on billing date, grace period, and fees.

Payment Schedule (First 6 Months)

MonthPaymentPrincipalInterestBalance
1$400.00$316.67$83.33$3,683.33
2$400.00$323.26$76.74$3,360.07
3$400.00$330.00$70.00$3,030.07
4$400.00$336.87$63.13$2,693.20
5$400.00$343.89$56.11$2,349.31
6$400.00$351.06$48.94$1,998.25

Showing first 6 of 12 payments. Use the full calculator →

Compare Payment Amounts ($4,000 at 25% APR)

Monthly PaymentPayoff TimeTotal Interest
$100.00/mo7 yrs 3 mo (87 mo)$4,700.00costs $3,900 more
$150.00/mo3 yrs 4 mo (40 mo)$2,000.00costs $1,200 more
$200.00/mo2 yrs 3 mo (27 mo)$1,400.00costs $600 more
$250.00/mo1 yr 8 mo (20 mo)$1,000.00costs $200 more
$300.00/mo1 yr 4 mo (16 mo)$800.00costs $0 more
$400.00/mo ◀1 yr (12 mo)$800.00current
$500.00/mo9 mo (9 mo)$500.00saves $300
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FAQ

How long to pay off $4,000 at 25% APR paying $400/month?
At $400.00/month on a $4,000 balance at 25% APR, payoff takes 1 year (12 payments). Total interest paid: $800.00.
How much interest will I pay on $4,000 at 25%?
With a $400/month payment you'll pay $800.00 in interest over 12 months. Total out-of-pocket: $4,800.00.
How do I pay off $4,000 faster?
Every extra dollar reduces both the balance and future interest. Adding $100 more per month (total $500) would cut roughly 2 months off your payoff time.